#pragma once
#include "GePoly.h"
#include "EntitySet.h"
#include "GeTriangle.h"
#include "SHLoopList.h"

// 多边形的三角形化
class GePolygonEx : public GePoly 
{
public:
	GePolygonEx();
	GePolygonEx(GePoly &src);
	GePolygonEx(EntitySet &ent);
	GePolygonEx(const GePolygonEx &src);
	virtual ~GePolygonEx();

	virtual bool IsKindOf(TEntityId entType) const;
	virtual TEntityId Type() const;
	virtual void CopyFrom(const GeEntity* pSrc);
	
	ADSGePoint3d * operator [](int nIndex);
	const ADSGePoint3d & operator [](int nIndex) const;
	GePolygonEx & operator = (const GePolygonEx &src);
		
    // 求法向量，用来作为坐标变换
    int GetNormal(TVector3D &vtNormal) const;

	int Make(const TCHAR *szLay);

	// b2D--TRUE, 已经是二维；否则是三维，需要坐标变换
    int Trianglize(PtrList<GeTriangle> &lstTris, BOOL b2D = FALSE) const;
	int SubTrianglize(PtrList<GeTriangle> &lstTris);

	int GetInsidePoint(ADSGePoint3d &ptRet, BOOL b2D = FALSE) const;
	int SubGetInsidePoint(ADSGePoint3d &ptRet);

	//是否为凸多边形，2D
	BOOL IsConvex() const; 
	BOOL IsVisible(int idx) const;
	
	void Reset();
	void Reverse();
	void Ecs2Wcs(TVector3D vtEcs);
	void Wcs2Ecs(TVector3D vtEcs);
  
	void SetVisible(int idx, BOOL bVis);
	
	void RemoveNode(int nIndex);
	void AppendNode(const ADSGePoint3d &pt, int nIndex = 1);

	double GetEdgeLength(int idx) const;
	double GetAngle(int idx) const;
	ADSGePoint3d GetVertex(int idx) const;
	SHLoopList<int>& GetVisibleFlag();
	
public:
	// 1--visible; 0-invisible  
	SHLoopList<int> m_lstVisibleFlag; 
};